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https://www.readbyqxmd.com/read/28329764/the-lung-is-a-site-of-platelet-biogenesis-and-a-reservoir-for-haematopoietic-progenitors
#1
Emma Lefrançais, Guadalupe Ortiz-Muñoz, Axelle Caudrillier, Beñat Mallavia, Fengchun Liu, David M Sayah, Emily E Thornton, Mark B Headley, Tovo David, Shaun R Coughlin, Matthew F Krummel, Andrew D Leavitt, Emmanuelle Passegué, Mark R Looney
Platelets are critical for haemostasis, thrombosis, and inflammatory responses, but the events that lead to mature platelet production remain incompletely understood. The bone marrow has been proposed to be a major site of platelet production, although there is indirect evidence that the lungs might also contribute to platelet biogenesis. Here, by directly imaging the lung microcirculation in mice, we show that a large number of megakaryocytes circulate through the lungs, where they dynamically release platelets...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28329590/concomitant-metastatic-cutaneous-tuberculous-abscesses-and-pott-disease-in-an-immunocompetent-patient
#2
Ana Marcos-Pinto, Tiago Marques, António Pedro Machado, Luís Soares-de-Almeida, Paulo Filipe
Tuberculosis affects one-third of the world's population. The incidence of extrapulmonary tuberculosis including cutaneous and skeletal manifestations has increased in the last decades. The authors report a clinical case of concomitant metastatic cutaneous abscesses and Pott disease in an immunocompetent patient, a rare presentation of tuberculosis.
October 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28327423/characterization-of-an-extracellular-protein-rv1076-from-m-tuberculosis-with-a-potential-role-in-humoral-response
#3
Gurkamaljit Kaur, Bandana Kumari, Jagdeep Kaur
Many mycobacterial proteins involved in lipid metabolism are reported to be essential for survival and pathogenesis of M. tuberculosis. Rv1076 of M. tuberculosis has been annotated as a putative esterase/lipase based on the consensus sequence 'GXSXG'. It is conserved in all the mycobacterial species. Therefore, in the present study we have characterized Rv1076 gene product in detail. The gene rv1076 was expressed in E. coli and purified from inclusion bodies with approx. 40% yield. The protein showed high specific activity with pNP- butyrate as preferred substrate...
March 19, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28324273/acute-pancreatitis-caused-by-mycoplasma-pneumoniae-an-unusual-etiology
#4
Teresa Valdés Lacasa, María Alejandra Duarte Borges, Alicia García Marín, Covadonga Gómez Cuervo
It is well known that the most important etiologies of acute pancreatitis are gallstones and alcohol consumption. Once these causes have been ruled out, especially in young adults, it is important to consider less frequent etiologic factors such as drugs, trauma, malformations, autoimmunity or systemic diseases. Other rare and less well studied causes of this pathology are infections, among which Mycoplasma pneumoniae has been reported to cause acute pancreatitis as an unusual extrapulmonary manifestation. Here, we report the case of a 21-year-old patient who had acute idiopathic pancreatitis associated with an upper respiratory tract infection...
March 21, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28321515/isolated-optic-neuritis-associated-with-mycoplasma-pneumoniae-infection-report-of-two-cases-and-literature-review
#5
Seo-Young Choi, You-Jin Choi, Jae-Hwan Choi, Kwang-Dong Choi
Mycoplasma pneumonia is a major pathogen of primary atypical pneumonia and has been known to cause various kinds of extrapulmonary manifestations involving almost all organs of the human body. Optic neuritis associated with M. pneumoniae infection has rarely been described and mostly, it combined other neurological complications including meningitis, meningoencephalitis, myelitis, and peripheral neuropathy. We report two patients who presented with isolated optic neuritis due to M. pneumoniae infection, and reviewed the literatures on five additional patients...
March 20, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28317811/performance-of-the-xpert-mtb-rif-assay-in-the-diagnosis-of-tuberculosis-in-formalin-fixed-paraffin-embedded-tissues
#6
Pascal Polepole, Mwila Kabwe, Mpanga Kasonde, John Tembo, Aaron Shibemba, Justin O'Grady, Nathan Kapata, Alimuddin Zumla, Matthew Bates
OBJECTIVE/BACKGROUND: Extrapulmonary tuberculosis (EPTB), which accounts for 10%-40% of the global burden of TB, with the highest incidence in Sub-Saharan Africa, is strongly associated with human immunodeficiency virus infection. Diagnosing EPTB is challenging, and recently, there has been a concerted effort to evaluate the latest molecular diagnostics for diagnosing TB in a range of specimen types. The Xpert MTB/RIF assay (Cepheid, Sunnyvale, CA, USA) is one such technology, which simultaneously detects Mycobacterium tuberculosis and rifampicin resistance...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28315657/magnitude-and-determinants-of-adverse-treatment-outcomes-among-tuberculosis-patients-registered-under-revised-national-tuberculosis-control-program-in-a-tuberculosis-unit-wardha-central-india-a-record-based-cohort-study
#7
Anuj Mundra, Pradeep R Deshmukh, Ajay Dawale
INTRODUCTION: Deaths, defaults, relapses, and treatment failures have made the control of TB difficult across the globe. METHODOLOGY: This study is a record-based follow-up of a cohort of patients registered under Revised National Tuberculosis Control Program in the year 2014 in Wardha Tuberculosis Unit, India. Data were collected from the records available at the District Tuberculosis Office. RESULTS: Data of 510 patients were analyzed. The sputum conversion rate was 88%...
March 15, 2017: Journal of Epidemiology and Global Health
https://www.readbyqxmd.com/read/28303821/detection-of-ofloxacin-resistance-by-nitrate-reductase-assay-in-mycobacterium-tuberculosis-isolates-from-extrapulmonary-tuberculosis
#8
Neeta Shrivastava, Reena Set, Sheetal Bankar, Jayanthi Shastri
CONTEXT: Increased use of fluoroquinolones to treat community-acquired infections has led to the decreased susceptibility to Mycobacterium tuberculosis. There is a paucity of data on ofloxacin (OFX) resistance detection by nitrate reductase assay (NRA). Hence, the present study was carried out to find the efficacy of NRA for detection of OFX resistance in M. tuberculosis isolated from extrapulmonary tuberculosis (EPTB) cases. AIMS: (1) To compare sensitivity, specificity and median time required to obtain results by NRA with economic variant proportion method (PM) for detection of OFX resistance...
January 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28302253/determinants-of-quality-of-life-and-return-to-work-following-acute-respiratory-distress-syndrome
#9
Frank Dodoo-Schittko, Susanne Brandstetter, Sebastian Blecha, Kathrin Thomann-Hackner, Magdalena Brandl, Helge Knüttel, Thomas Bein, Christian Apfelbacher
BACKGROUND: Acute respiratory distress syndrome (ARDS) in adults is a consequence of lung damage caused by either pulmonary or extrapulmonary disease. Survivors often suffer from an impaired health-related quality of life (HRQoL), mental and physical impairments, and persistent inability to work. METHODS: In this systematic review of the literature, we consider the determinants of HRQoL and return to work (RtW). 24 observational studies showing a statistical association between one or more determinants and HRQoL or RtW were included...
February 17, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28302234/tuberculous-dactylitis-with-concomitant-thyroid-involvement-a-rare-presentation-of-childhood-tuberculosis
#10
Sobia Qamar, Farrah Naz, Samia Naz, Iftikhar Ejaz
Extrapulmonary tuberculosis rarely presents as thyroid involvement along with other manifestations, and poses a diagnostic challenge on account of paucibacillary nature of disease. In general, the diagnosis of tuberculosis is based on epidemiological risk factors, clinical features, imaging studies, in addition to a positive skin testing or Interferon Gamma Release Assay (IGRA). A 14-year boy presented with history of fever and weight loss for one year. On examination, he had painful swelling of fingers and toes along with a painless thyroid nodule and squint...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28297814/-igg4-related-lung-disease-analysis-of-8-cases-and-literature-review
#11
G J Han, H Hu, D Mao, X Bai, D Y She, S F Zhao, Z L Wen, J Gao
Objective: To improve the understanding and treatment of IgG4-related lung disease (IgG4-RLD). Methods: The clinical characteristics, serum IgG4 levels, pathological features, chest CT, therapy and prognosis of 8 patients with IgG4-RLD were retrospectively analyzed. These patients were admitted to the People's Liberation Army General Hospital and the pathological diagnosis was made between December 2005 and March 2016. Relevant literatures were reviewed. Results: The 8 patients with IgG4-RLD included 4 men and 4 women, with an average age of (59±4) years (range, 37-74)...
March 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28294485/structure-of-the-complex-between-a-heparan-sulfate-octasaccharide-and-mycobacterial-heparin-binding-hemagglutinin
#12
Teng-Yi Huang, Deli Irene, Medel Manuel L Zulueta, Tzu-Jui Tai, Shih-Han Lain, Cheng-Po Cheng, Ping-Xi Tsai, Shu-Yi Lin, Zhi-Geng Chen, Chiao-Chu Ku, Chwan-Deng Hsiao, Chia-Lin Chyan, Shang-Cheng Hung
Heparin-binding hemagglutinin (HBHA) is a 199 amino acid virulence factor at the envelope of Mycobacterium tuberculosis that contributes to latent tuberculosis. The binding of HBHA to respiratory epithelial cells, which leads to extrapulmonary dissemination of the pathogen, is mediated by cell-surface heparan sulfate (HS). We report the structural characterization of the HBHA/HS complex by NMR spectroscopy. To develop a model for the molecular recognition, the first chemically synthesized uniformly (13) C- and (15) N-labeled HS octasaccharide and a uniformly (13) C- and (15) N-labeled form of HBHA were prepared...
March 15, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28286903/the-risk-of-tuberculosis-in-sle-patients-from-an-asian-tertiary-hospital
#13
Yong Yang, Julian Thumboo, Ban Hock Tan, Thuan Tong Tan, Chern Hui Jeffrey Fong, Han Seong Ng, Kok Yong Fong
Systemic lupus erythematosus (SLE) has been associated with increased risk of tuberculosis (TB). However, little is known about the extent and risk factors for TB among Asian patient with SLE. We aimed to assess the rate of TB in patients with SLE, and investigate the risk of SLE on TB development using hospital administrative database. This is an historical cohort study of hospital discharge database from 2004 to 2011 to identify cases with SLE and TB using International Statistical Classification of Diseases and Related Health Problems, 9th Revision, Australian Modification (ICD-9-AM) codes...
March 12, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28282711/abdominal-pain-as-extrapulmonary-presentation-of-pneumonia-in-an-adult-a-case-report
#14
Hamid Emadi Koochak, Elnaz Tabibian, Shahram Rahimi Dehgolan
Pneumonia is considered as the main cause of abdominal pain in children whereas it presents mostly by respiratory symptoms in adults. Here we present a 71-year-old Iranian female who complained specifically of abdominal pain on admission to our emergency department. We had found nothing as an etiology in our first evaluations. After several hours chest pain was added to the symptoms and the following chest, X-Ray showed a consolidation in the right lung base. She was treated by pneumonia antibiotic regimen and discharged after seven days in a good clinical condition...
February 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28280862/-pulmonary-metastasectomy-in-renal-cell-carcinoma
#15
S Macherey, C Kauffmann, A Heidenreich, F Doerr, T Wahlers, K Hekmat
BACKGROUND: In patients with isolated meta- or synchronous pulmonary metastases from renal cell cancer, lung metastasectomy could be an appropriate treatment option after successful treatment of primary cancer. OBJECTIVES: Presentation of lung metastasectomy as a treatment option in patients with pulmonary metastatic renal cell cancer and the postoperative outcome. Description of alternative treatment modalities focusing on "targeted therapies". MATERIALS AND METHODS: Systematical literature research and qualitative analysis of studies on patients undergoing lung metastasectomy after primary nephrectomy published since 01 January 2000...
March 9, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28278283/enhanced-control-of-mycobacterium-tuberculosis-extrapulmonary-dissemination-in-mice-by-an-arabinomannan-protein-conjugate-vaccine
#16
Rafael Prados-Rosales, Leandro Carreño, Tingting Cheng, Caroline Blanc, Brian Weinrick, Adel Malek, Todd L Lowary, Andres Baena, Maju Joe, Yu Bai, Rainer Kalscheuer, Ana Batista-Gonzalez, Noemi A Saavedra, Leticia Sampedro, Julen Tomás, Juan Anguita, Shang-Cheng Hung, Ashish Tripathi, Jiayong Xu, Aharona Glatman-Freedman, Williams R Jacobs, John Chan, Steven A Porcelli, Jacqueline M Achkar, Arturo Casadevall
Currently there are a dozen or so of new vaccine candidates in clinical trials for prevention of tuberculosis (TB) and each formulation attempts to elicit protection by enhancement of cell-mediated immunity (CMI). In contrast, most approved vaccines against other bacterial pathogens are believed to mediate protection by eliciting antibody responses. However, it has been difficult to apply this formula to TB because of the difficulty in reliably eliciting protective antibodies. Here, we developed capsular polysaccharide conjugates by linking mycobacterial capsular arabinomannan (AM) to either Mtb Ag85b or B...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28277329/sevoflurane-compared-with-isoflurane-minimizes-lung-damage-in-pulmonary-but-not-in-extrapulmonary-acute-respiratory-distress-syndrome-in-rats
#17
Mariana N Araújo, Cíntia L Santos, Cynthia S Samary, Luciana B B Heil, Vinicius C M Cavalcanti, Fernanda F Cruz, Nathane S Felix, Johnatas D Silva, Marcelo M Morales, Paolo Pelosi, Fatima C Fernandes, Nivaldo R Villela, Pedro L Silva, Patricia R M Rocco
BACKGROUND: Volatile anesthetics modulate inflammation in acute respiratory distress syndrome (ARDS). However, it is unclear whether they act differently depending on ARDS etiology. We hypothesized that the in vivo and in vitro effects of sevoflurane and isoflurane on lung damage would not differ in pulmonary (p) and extrapulmonary (exp) ARDS. METHODS: Twenty-four Wistar rats were randomized to undergo general anesthesia (1-2 minutes) with sevoflurane and isoflurane...
March 8, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28275564/two-cases-of-tuberculous-spondylodiscitis-a-rare-manifestation-of-extrapulmonary-tuberculosis
#18
José Antonio de Jesús Batún-Garrido, Marisol Salas-Magaña, Oscar Alejandro García-Padrón, Nicolás Valencia-Serrano
No abstract text is available yet for this article.
February 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28273983/primary-extrapulmonary-extensively-drug-resistant-tuberculosis-of-the-hip-in-an-immunocompetent-female-a-case-report
#19
Sankalp Yadav, Gautam Rawal
The problem of drug resistant Tuberculosis (TB) is looming large in the developing countries. TB of the skeletal system is rare and the primary extensively drug resistant TB (XDR-TB) of the hip joint has never been reported in the medical literature so far. The present case is a very rare case of primary XDR-TB of right hip joint in an immunocompetent Indian female. The present case is an important addition to the medical literature, as it will serve as a valuable source of information to the medical and surgical fraternity...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28272193/pelvic-lymphangioleiomyomatosis-treated-successfully-with-everolimus-two-case-reports-with-literature-review
#20
Sharjil Wahid, Ping Chia Chiang, Hao Lun Luo, Shun-Chen Huang, Eing-Mei Tsai, Po Hui Chiang
BACKGROUND: Lymphangioleiomyomatosis (LAM) is a rare disease affecting young women caused by abnormal proliferation of smooth muscle-like cells (LAM cells) in the lungs and extrapulmonary sites (extrapulmonary LAM). The objective of this case series is to demonstrate marked regression in 2 cases of retroperitoneal LAM after treatment with everolimus, an mTOR inhibitor. METHODS: We enrolled 2 cases with large volume, extrapulmonary pelvic LAM, and evaluated them with contrast-enhanced abdominal computed tomographic (CT) scans at presentation and serially during treatment with everolimus...
March 2017: Medicine (Baltimore)
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